| 网络密度对车辆碰撞仿真的影响与计算效率 |
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| 引用本文： | 王怀,葛如海,栗艳丽,王晓. 网络密度对车辆碰撞仿真的影响与计算效率[J]. 江苏大学学报(自然科学版), 2002, 23(4): 29-33 |
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| 作者姓名： | 王怀 葛如海 栗艳丽 王晓 |
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| 作者单位： | 1. 江苏大学汽车与交通工程学院,江苏,镇江,212013
2. 上海同济大学,上海,200092 |
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| 基金项目： | 国家机械局基金资助项目 ( 97QK0 0 33) |
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| 摘 要： | 在车辆碰撞仿真实际应用中，计算的精度和时间是一对不可调和的矛盾，而网格密度的划分对这两者有着极为显著的影响，笔者以有限元显式中心差分法为理论基础，定量分析了有限元网格密度划分对计算精度的影响，并推导了计算效率随网格密度的变化关系，说明网格划分并非越细越好，最后通过一个实际模型的仿真计算加以验证结论的正确性，这些结果对于汽车及其零部件的磁撞仿真研究具有较大的指导意义。
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| 关 键 词： | 网络密度 车辆碰撞 仿真 网格划分 计算效率 安全性 汽车 |
| 文章编号： | 1671-7775(2002)04-0029-05 |
| 修稿时间： | 2001-12-17 |
The Influence of Meshing Density on Automobile Crashing Simulation and the Efficiency of Calculation |
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| WANG Huai ,GE Ru hai ,LI Yan li ,WANG Xiao. The Influence of Meshing Density on Automobile Crashing Simulation and the Efficiency of Calculation[J]. Journal of Jiangsu University:Natural Science Edition, 2002, 23(4): 29-33 |
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| Authors: | WANG Huai GE Ru hai LI Yan li WANG Xiao |
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| Affiliation: | WANG Huai 1,GE Ru hai 1,LI Yan li 1,WANG Xiao 2 |
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| Abstract: | The precision and time of calculation are in pungent contradiction for practical application of automobile crashing simulation. The meshing density has great influence on them. The influence of finite element meshing on the precision of calculation result is presented in this paper and the relation between precision of calculation and density of meshing is also derived by the method of apparent center difference. It is concluded that it is not better when the meshing is denser. A simulated model is calculated to show the accuracy of conclusion. |
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| Keywords: | crash simulation meshing precision of calculation |
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